After jetting out of Sydney on Thursday morning, the Duke and Duchess of Sussex landed in Melbourne about 10.30am, more than six hours after royal watchers began taking their places.

Rain is following Harry and Meghan. The prince was drenched during his time at Dubbo on Wednesday and showers are forecast for Melbourne on Thursday, but organisers have promised everything will go ahead as planned.

Their itinerary includes a short tram ride on the world's largest urban tram network, which boasts some 250km of track.

It's likely to be a shiny new carriage fit for a king, or at least sixth-in-line-to-the-throne.

The expectant parents will also spend time meeting the public, before visiting a school and even go to a beach.

The couple will meet young community leaders during a special reception hosted by Governor Linda Dessau.

"We are pleased to have the opportunity to host the duke and duchess, to show them innovative programs by young Victorians, and to introduce them to our next generation of leaders," the governor said ahead of the visit.

Premier Daniel Andrews, who supports an Australian republic, met Prince Harry and Meghan at the airport.

"There's some activities at Government House including an opportunity for the royal couple to meet lots of Victorians who I'm sure will be queued up to say 'hello' and to say 'congratulations' on the pregnancy and then there's a pretty full program of events," he said

After a busy day in Melbourne, Prince Harry and Meghan will head back to Sydney.